Arch construction for furnaces.



vv. Len/1B. ARCH CONSTRUCTION FOR FURNACES.

APPLICATION FILED OCT-24.1917.

Patented Aug. 13, 1918.

ZSHEETS-SHEET I.

To all 'whom #may concern:

WILLIAM LEMB, or BROOKLYN, New Yoan.

ARCH coNsTaUcTIoN Foa FUnNAcEs. l

maratea.

Specification of Letters Patent.

Patented Aug. 13, 191e.

Application led ctober724, 1917. Serial No. 198,347.

Be itknown' that I, WILLIAM LEMB, a citi'- zen of the United States, anda resident of Brooklyn, inthe county of Kings and State of New York,have invented certain new and useful Improvements in Arch Constructionsfor Furnaces, of which the following is a specification.

'llhe object of the present invention is to provide an improved'construction for the 4arch or roof of a'furnace for boilers orcombustion chambersv forl any desired purpose; wherein the blocks orbricksV forming the exposed portion of the arch or roof can be removedand readily replaced without tearing down the supporting members; andinl lwhich the' su porting members can be read.-

4 ily replaced yV theremoval of only a few t ll of the units vcomposingvthe structure. A

further object of the/invention is` to cause it to be adapted yto eithera flat arch or roof, or a curved one in the form of a true arch.

Another object of the invention is to pro-4 vide an improved form of endmember for the arch or roof that comprises `one of the Vunits of thesystem, and is not [dependent upon 'special retaining means. lln theaccompanying drawings showing` embodiments of my invention, Figure 1 isa section through the top wall of the combastion chamber.l Fig. 2 isatransverse section on the line 2-2 of Fig. 1. Fig. 3 is an endelevation of the parts shown in Fig. 1. Fig. 4 is a side view and Fig. 5anend view of one'of the hangers. Y Fig. 6 is a *side view and Fig. 7 anend view of a spe FIF cial hanger. Fig. 8 shows`.one of the inter--irnediatebloclrs and Fig. 9 shows an` end block. Fig. 10 is amodification showing a curved roof'for the formation. Fig. 11 is a fra(arched roof. Fig. 12 shows one of the intermediate blocks. and Fig. 13shows an end block. Fig. Mfshowsone of the Vsupporting blocks'at. theends of the arch. Fig. 15 shows the complementary block for Vthe latter;and Figs. 16 and 1i? show the hanger for this form.

lln the arrangement shown in Figs. 1-91.

l show a number of beams extending parall lel and sopor-tied at theirends by suitable Walls'l. s shown. ll provide a series of beams'l thathave ledges .on their bottom. being substantially shaped and inverted.

ese are placed a comparatively small distance apartfor the pur f webentary View of two adjacent beams' the opposed ledges in adJacent beamsto receive and supportl suitable hangers 19. These hangers arein theform of webs havose of permitting mg lugs projecting at the top to reston the ledges of the beams as shown, ers are .also provided with meansat the lower` portion for engagement with the blocks Vor bricks formingthe top of the furnace chamber. prise a web portion 20 having a rib orbar 21' at the `top projecting. at each end, the being narrower than thedistance apart of the beams, so that the hangerr may be and the) hang-As shown, the han ers coml A' passed up between the beams and thenturned transversely thereto, to cause thev ex# tremities of 'the bars 21to engage the ledges of the beams and support the hangers. As shown, thehangers also have a rib or bar 22 atthe lower 'cdgethat may correspondwith the bars 21 and hence the hangers are reversible so that eitherend`v may engage .the beams to support the hangers.

The bricks that are 'snpported`solely by these hangers, have a suitabl"slot therein.

y rllhe brick 23`is shownas having a slot 24 I in its upper edge that iscylindrically enlarged at the bottom as shown at 25. .By thisarrangement the brick can be caused to slide on the bar l 22 of thehanger, and be suspended thereby. because of the; bar

being slightly smaller-than the slot 24. yeti being of a size to slidein the enlarged portion 25. The hangers 19 are suspended from the beamsa distance apart equal to the width of the bricks 23, and they arepreferably arranged. in alinement across the beams. liy thismeans a rowof the/ hangers extend in substantially the same vertical plane. and thebricks can be assembled and` removed by sliding them Alengthwise of thehanger until they Contact on their side-walls. lt will he observed fromFig. 2 that each Abrick will have. a slight rocking movement on thehanger by reason of the loose iit of the hanger bar in its slot. rFhisis to allow for expansion of the hangers and of the con .structionVgenerally. that tend to fracture the `brick. Furthermore, thecylindrical form of the projecting ends or bar 21 of the hanger ermitala sli ht rocking movement on' the accommodate for expansion anddistortion of the supports.

At the ends of alining rows of bricks and eam. to furt er mightotherwise l lll@ of hanger, shown-separately invFi'gsg 6 and 7 "Thishanger has a hook vportion 26 at the upper'end, anda rib or bar 27 onthe-lower y edge corresponding with the lower bar 22 of the hanger 19.The hook portion 26 restsv Fig. 1, that is engaged by the hook'portionand thereby j held'7 in place. i This ,hangen when placed on the beam171 will abut thev adjacent hanger 19, and is adapted to re` ceivethe4endblock 29,.,whose slot 30 doesl not1 extend -all the way .across theblock, but/oni about one half'of the distance. The adgacentbrick 23 mayreceive the ex- .tremity'of the rib 27 of5thishanger as lshown andserves to stren-gthenthe supporting means. A t the front end of thefurnace 2a anv L-beam 32.l Between a ,"lbeamv 31 -is shown,oppositewhich vis t ese rest a set of hangers 33 Asimilar to thehangers-19, that 'support loricks34 and 35 suitably slotted for thispurpose. A hanger36 is' also pro- `v[vided similar to. thehanger shownin Fig.

are suspended from the slotted portions.

, fmerel! .thefend block can be removed and the a jacent bl'ockradvancedin place of the With anfarran'gement 735 6, of'hook formation, that issupported frbm @the beam31fhaving the rib on lits ledge for" 'l thispurpose.

f ,This-hook hanger serves to port 'the block 37 It will? be 'observed astep formation, `but obviously any" shape- `-of brick could-'belemploye'd, as--long as-they hangers by proper "of this character,

should any vof the blocks become broken or* fall out, it isonlynecessary to removejthe blocks between such place and one end 'ofthe other blocksand. slide in a new block y when the other blocks' 'can4be replaced.' relse l missingbldck, then the other yblocks are slidalongfand one new block inserted, and then the end block replaced; aShould a hanger 4become damagedor broken, it isonlynecessaryV to removethe blocks supported therebyv "andj lthen the hanger can`betu`rned`atl-an the adjacent hangers-or -any of the blocks.

viously a new hanger can besinserted in "the same manner withoutv'divsturblng anyv of rest onthe ledges of the bams,'and then l the.blocks slidey into vent .displacement of, t

positions. K

ow a very similar a1'- themin their proper fn Figs; lO-l,

lace, that. will pre e hangers, and hold beams 40 of T-shape, that arelcurved or archedfromI end to' end, and reston supporting walls 41 and42:. These .beams are placed` in a .parallel series,` and serve to suport hangers 43 similar to the hangers l9 described that rest on theprojecting ledges of, the ad arranged in' alinement transversely of thebeams, andJ serve to support blocks 44 -provided with slots 45thereinenlarged atthe lower portions, as shownin Fig..12. These blocks havetheir contacting side facesinclined, that is, are of'wedge sha e, andthe lower face is preferably slight y concave corresponding with thecurvature of the arch.I The end blocks 46 may have their slots extendingonly part way across, and hook-shaped hangers'may be employed simi-l larto those used with' the straight lform of furnace roof. i

jacent beams. @These hangers are At the sides of the arch,specialbriclfs may be provided to allow a'slight'rockng movement. As.shown, 'I provide a' divided block' having a section47witha\convex-fa'ce 48.

pansion and contraction-of the arch. Withthis arch arrangement, anyofthe blocks, or 'any ofthe hangerscan be replaced with the same facilityas `with the other describedv arrangement. y J .f- It-'will be furtherobserved that the blocks 23 and 29V are provided with tongues 38 andjgrooves. 39 on thecontacting side faces, that i) interlockand preventassa e of smoke and gases between thebloc s. he wedge-shapev blocks 44and 45 are Yalso provided with similar ltonguesl and grooves 52in their*side faces.

Having thus Iclaim .s:- lf'In a with apair' of opposed supporting walls,of VUaseries yof parallel spaced beams' fianged at the y.lovy'ferp'edand extending between the f walls, setso hangers between the beams, eachcomprislng'a at web with a'rib on the described inventiomwhat y boi-lerfurnace, the combination top and bottom edge projecting beyond the Awebat the ends, said projecting ribs resting on the beam flanges werebyithe hangersare suspended/in alining rows transverse to the beams,andblocks each having a slot in the upper Vedge tthat is enlarged in.thei block whereby1l each block' may slide on the lowervrib of thehanger and be suspended thereby y.

to form aclosed top Wall forlthe `furnace.'

Y a'ser of parallel spacedbea'ms flanged at 2. In a boiler furnace, thecoinbinatiorn with a pair of opposed'supporting` walls, of

between the beams,

the lower edge and extending between the walls, sets of hangers betweenthe beams,

each comprising a flat web with a cylindriv that is cylindricallyenlarged in the block considerably larger than said hanger bar, wherebyeach block may slide on the lower bar of the hanger and be suspendedthereby to form a closed top wall for the furnace, said block havingaswinging movement on the bar.

3. In a boiler furnace, the combination with a pair of opposedsupporting walls, of a series of parallel spacedbeams flanged at thelower edge and extending between the walls, sets of hangers between thebeams, each comprising a flat web with a rib on the top and Abottom edgeprojecting beyond the web at the ends, said projecting ribs resting onthe beam flanges whereby the hangers are suspended in alining rowstransverse to the beams, blocks each having a slot in the upper edgethat is enlarged in the block whereby each block may slide on the lowerrib of the hanger and be suspended thereby toform a closed wall for thefurna"`c"`e, and a special hanger comprising a web having a hook portionat the top adapted to rest on the beam flange and a bar at the lowerportion arranged to aline withl said hanger bars, -whereby to support aslotted block substantially as set forth.

4. In a boiler furnace, the combination with a pair of opposedsupporting walls, of a series of spaced beams flanged at the lower edgeand extending between the walls, in the form of parallel arches, setsofhangers each comprising a flat web with a rib on the top and bottom edgeprojecting beyond the web at the ends, ysaid projecting ribs resting onthe beam flanges whereby the hangers are suspended in alining rowstransverse to the beams, and wedgeshaped blocks each having a slot inthe upper edge that is enlarged in the block wherey each block may slideon the lower rib of the hanger and be suspended thereby to form a closedarched top wall for the furnace.

5. ln a boiler furnace, the combination with a pair of opposedsupporting walls, of

a series of'parallel spaced beams flanged at the lower edge andextending between the walls in the form of parallel arches, sets ofhangers between the beams, each comprising a flat web with acylindrically rounded b ar on the top and bottom edge projecting beyondthe web at the ends, said projecting bars 4rest-ing on the beam flangeswhereby the hangers are suspended in alining rows transverse to thebeams, and wedge-shaped blocks each having a slot in the upper edge thatis cylindrically enlarged in the block considerably larger than saidhanger bar, whereby each block may slide on the lower bar of the hangerand be suspended thereby to form a closed arched top wall for thefurnace, also whereby each block is arranged to swing on the bar.

6. ln a boiler furnace, the combination with a pair of opposedsupporting walls, of a series of parallel spaced beams flanged at thelower edge and extending between thel walls, sets of hangers between thebeams, each comprising a, flat web with a lug on the top edge projectingbeyond the web at the ends, said projecting lugs rest-ing on the beamflanges whereby the hangers are suspended in alining rows transverse tothe beams, lugs on the lower edges of the hangers, and blocks eachhaving a ledge portion arranged to engage said latter lugs wherebyblocks may be suspended on the lower lugs of the hanger in alining rowstransverse to the beams to form a closed top wall for the furnace.

7. ltn a furnace arch construction, the combination with a series ofwedge-shaped blocks arrangled in the form of an arch, and

supporting means for the extremities of the arch, of an end block foreach end of the arch, that is composed of com lemental sections engagingon their radia faces of the sections, one section having a cylindricalengaging face, and the other section being similarly inwardly curved onits engaging face, whereby the sections may have a relative movement ina radial direction.

8. lin a furnace roof construction, the combination with supportingmembers, of hangers each provided with free overhanging end portionsresting by rounded bottom faces on AVopposed supports respectivelywhereby each hanger can freely swing toeach side of its longitudinalaxis and blocks detachably oarried by the hangers.

9. In a furnace roof construction, the combination with 'supportingmembers, of hangers each provided with free overhanging end portionsresting by rounded bottom faces on opposed supports respectively wherebyeach hanger can freelyl swing to each side of its longitudinal axis, andblocks detachably carried by the hangers and having a free swingingmovennt thereon transverse to 'the longitudinal axes of the h'anger andblock. l Signed this 22nd day of October, 1917.

WILLIAM LEMB.

lao

